Ya know, if you're really fiending for the tone, Behringer is making both the FZ2 and HM2 circuits in their stompboxes. They're really poor build quality with all smd and surface-mount plugs and all that, but the circuits are the same, or similar, to the BOSS ones. I've been really thinking about getting both of the ones I want, and also checking out their delays, trems, etc. I don't gig, so they'd just sit on a shelf and not get smacked around.
I have an original hyper fuzz.. the first guitar pedal I ever bought. It was never my cup of tea until I got older and figured out how to use it and stack it. It's a pretty decent circuit imo. I really like how saturated it can get!
-Brett